Double-acting door-check.



PATENTED 06T'. 2s, 1905.

O. C. RIXSON. DO'UBLE ACTING DOOR CHECK.

' lAPPLICATION FILED JUNB25,1904.

No. 833,940. I PATENTED CCT. 2s, 1906. o. C. RIXSCN.

DOUBLE ACTING DCCR CHECK. APPLIOA'IION YILED'JUNE 25,1904.

3 SHEETS-SHEET 2,

No. 833,940. PATENTBD CCT. 2s, 190e.

- C. C. RIXSCN.

DOUBLE ACTING DCCR CHECK. APPLICATION FILED JUNE 25,1904,

3 SHEETS-SHI 1ET 3.

l ,IPA MIME checking UNITED sTATEs PATENT oEEroE.

OSCAR C. RlXSON, OF NEW YORK, N. Y.

Douste-ACTING. Doon-CHECK.

To a/ZZ whom t ntf/,y concern/H Be it knownv that I, OsoAR C. RrXsoN, a citizen of the United States, residing at New York, in the State of New York, have invented a certain new and uselul Double-Aeting vDeor-Oheck, of which the 'following isa specilicatioin f My'invention relates to means for checking the cl'os'ure of doors to prevent slam ming, and particularly to door checks designed to. allow of opening the door in both directions. primary objects of the invention are, to provide a double acting check by which the door may be ooened in either direction and will be cheeked y one degree of resistance in closing in one direction, and a diii'erent resistance when closing in the opposite direction, when desired, and to vary the resistance as the doorcloses; Further vobjects are, to render more `simple'andetieetive the checking device and to'provide means for regulating the Y force; to' provide'a Huid escape- Inent check 'with rneans to lvary,A the escape- Inentwith the-approach to closure and also when the spiri'dle operating the'cheek is rotated in di'i'ierei'it directions, to provide superior devices for regulating the escapenient of the iluid, and togenerally simplify, cheapen andirnprove the elliciency of door checks. These objects, and other advantages to hereinafter appear, l attain'by means of the structure illustrated in preferred form in the` accompanying drawings, wherein- Figure 1 is a plan Aview and. partial horizontal section showing a door designed to open in both directions and having iny improved check applied thereto; v

Figure 2 is a side elevation of the same;

Figures Sand 3 are partial vertical sections of the joint of the movable arin with its bracket for attachii'ig it to the door casing;

Figure 4 is a vertical section of the checking casing and parts contained therein, taken in a plane parallel with the door, on line (4) in Figure with the actuating arm removed,l

Figures 5 and o' are horizontal. sections throughthe casing, taken on lines (5, 6) in. Figure 4, respectively' showing the moving parts in two positions v Figure 7 is a partial side elevation Yand a broken vertical section, taken along the line (7)in1 `igure4;

Figures 8 and 9 are partial sections of part oi" the caang and illustrating the two alternative positions of the trippingfdogrevolving the escapeinent tube, and

l Specification oflLetters Patent. Application and June 25,1904. serial No. 214.103.

The

Patented Oct. 23, 1.906.

' Figure 10 is a horizontal section oi the Vcasing and cylinder takenV through the escapeliorpurposes of illustration. I have deand outward, and adapted toysuch positions as outside doors, where when the door opens closing, and when it swings inward is opposed bythe draft in closing 3 the two opposite closingmoveinents meets with different resistances, to accord with which the checks in the two directions should be properly proportioned.

seen that l attach to some stationary part, such as the door jamb, 12,'a bracket 13, te which is pivoted an arm 14, with'its bearing set at an angle tothe plane of nioveinentof the arm so that the arm may swing under the door janib as the door. opens outward. arm 14 is pivoted atits outer end tothe block y14 which is in turn pivoted toA a screwhead 15', adjustably engaging the actuating arm 16, which by pivot connection Withthe in Figure 4),v and thus the door swings in or out it swings .the arms seas to rotate. the shaftA 18. .v 1t will be noted that whenv the door opens inward the arm.A 1.6 swings forward in one direction-with respect to the cheek, and when the door is opened. outward and that generally speaking, the shaft 18 has about a quarter rotationwhen the door is tion is in opposite directions in the two cases respectively.

Referring now more urcs 4 to 10, i.t will be noted that the check- 20, which are screwed upon the door asinay be desired, as shown in Figure 1, and that this Casin g 1!) is closed by the screw plug 19,, which furnishes a bearing vl'or one end of the shalt 18, which is tightly' sealed by means of any desired form of packing suoli as that illustrated ,at 1U". The other end of the shalt, 21, has a bearing inthe casing, and the two ends oi." the shaft are connected by a double crank 22, which engages the plunger' in Figure and at its outer endl therod. carries, o n the. pivot 25, the cliecknig p1ston24,

ment tube and alongthe line (10) in Figure 4.

outward it isv aided by the incoming draft in' s o thatQthe door inv This head bracket ,17, on top of the checking c ylinder, engages the checking shaft 18, (shown l ing casing 1S) isprovided with integral wings rod'23, by n'icans of the strap 23, as shown signed and 'shown the present door ,checkas applied to a door which swings both inward lielerring first to Figures 1 to 3a, it will be it swings backward in the other direction;

opened in either direction, but that the rotad particularly to Fig- .I

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outlet 3i at the 'lett o --screwed into the casing 19.

der, and the space' is filled With-,oil or any' other fluid desired; The piston `-2st is perforated at one side so as to allow of its movement over the escapement tube 27, and as shown more plainly in Figures 7 to l0, the tube 27 has the rocker arm or tripping dog 28, which engages a pin 29, on the slde ofthe crank 22, so that as the -crankswings'inthe two directions it will engage the dog 28, and rock the tube'in two opi posite directions, as. indicated in. Figures 8 and This is for the urpose of causing the tp the tube 27, (Figs. 9

and l0), to register alternately with the two sides of the passage 32 in the casing, leading to the tWo outlets 33 and 34 respectively. By reference to Figures 8 and 9 it willbe noted also'that as the port 31 approaches its normalposition from either side, it gradually restricts its opening to partially out off the escapement of the liquid. rl`he outer end of the tube has yan inlet port 30,'which admits of the entrance of thefchecking fluid into the tube 27, as the piston 24 is carried to the right in the cylinder 26. The tube 27 is closed by` lugs at its two ends. It will be understoody of course, that some form of check valve, as the ball valve 4.0, shown in Figure 10, will be used in order to allow the liquid a perfectly free passage through the iston as 1t moves to the left, but will close as 1t moves back to the right so as to force the li uid' to escape through the port 30 and site 27:

:From Figure 10 especially, it will be seen that the two outlets tothe casing from the passage-way 32 are controlled by spindles 35 and 37, which have screw-threaded ends 36 and 38, extending outside the casing 19 and are capable of being adjusted and fixed in placey means of the nuts 39, engaging them and the casing, said spindles fitting loosely enough to allow escape ofthe fluid, but the s eed of escape is varied by the amount o friction which depends upon the length ofthe escapement passage.

' From the above description of the apparatus it will be seen that theaetion is very simple and is as follows: lhen the door swings inward, for example, the liquid freely passes through the piston 24 as it moves to the lett, and meantime the engagement of the pin 29 with the dog 28Ahas turned the tube 27 in position to cause the port 31 to register with the 'passage leading to the lefthand outlet 33, which is controlled by the spindle 3.5.- Upon. the return the checking escapement is therefore through outlet 33.

It, however, the door opens in the opposite direction, will be seen that the crank 22, and consequently thepin 29, will swing in the opposite direction and will thereupon wi lloc understood. of course, that a tap turn 'the dog 28, as shown in Figure 8, and regis-ter the port 81 with the passage 32 on the opposite side, leading to the outlet 34,

'with 'any resistances desired, as the spindle L8 revolves in eitherof the directions. And in either case the escapement va? is with the closure, and may be set at any amount by restricting` the escape portsl 33 'and fl. By 4this device it will appear that may swing any distance and swine; in ci'lnr direction, and still the door check may not 'accordingly as it has been regulated 'to uiterpose a certain resistance corresponding lo the conditions.

While, as will be observed from -l'iguree 7, 8 and 9, the port 31 is gradually closed. to strict the escapement asthe door closes and the pin 29 and crank arm 22 reaches its eenv tral position, or dead center, it is generally necessary on account of the increased lover-- age the door has in {'l'n'ustingl down the plun `ger 24 just atthis point, to interpose a much au mented resistance: For this purpose it wi be noted. that l have placed the port lo lat some distance from the end or th( *nl so that it is closed by the piston 24.- bei limit of outward movement reached. 'l leaves the .only escapement from bebiiid piston by leakage, and thus additional cn in power is applied at the ri ght minne I'ile out may be fdrmed in the tube fr( 'n end to the port 30 in order to mal-:e the or ing effect less sudden, as is customary in s` constructions. it is to be noted also l-l opening the door the pin 29 will have .mm the dog to about the position shown'iu Fi 8 before the inlet port 30 is uncovered by the piston.y For both ofthe reasons just noted, the checking power is ,much augmented vvlust as the door closes, whichever direction it Ir fi have been opened. @ther advantages oi t ie l device will readily occur to those familiar wi th the art.

Having thus described my invention :cui illustrated its use, what l claim as new, nod desire to secure by Letters Patent, is the icl 1. lin a door check, the combination wi ,h a casing and cylinder, of a piston for the cyl-- inder and devices for moving it by either the inward or outward movement oi' the ddo'r, fluid checking means for the piston, and an escapement from one side of the pistoni-o the 'the door other, provided with means for inter-posingdifferent resistances to the escapementwhen the door opens inward, and when the door opens outs/"ard, substantially as described.

2. ln a door check, the combination ci' ac thereto toropposing the movement of said ,door'lframe and the other to the door and so ing device for interposing different resisttube for escap'ement of fluid in front of said for'varying the amount of escapement iroin 'ot several outlet ports, as it is rotated in dilferent directions.-

tuating links and a check device attached links, one of the links being attached to the connected as to allow ot moving the operating parts of the .checking device in either et two directions according as the door opens inward or outward and means in the checkances to th c checking respectively as the door opens inwardor outward. J

3. .ln a door check, the combination of a casing a communicating cylinder and a piston therein, means operated by the opening of 'the door to move said piston, an -escapeirrent tube passing through the piston and allowing escaperr-.ent of fluid in front of the same, and. means tor moving the escape; ment tube so as to open its escape outlet alternately `to two separate and independent ports for escape of the fluid, substantially as described;`

4. In a door check, the combination with a closed casin `and a piston therein and means operate by the door to nieve it, o'f a piston, and a pair ot regulable outlets with means for alternately makingl communica-y tion between them andthe escapementtube. 5. In a door check, the combination with a casing and a fluid escapeinent checkingr device comprisin T in its construction a piston and a rotativeily actuated escapement tube having a port, regulable means in the casing said port by rotation of said tube, and means for operatively connecting said checking devices with a door 'whereby the closing movenient of the samefis checked substantially as described.

6. ln a door check, the combination with a cylinder inclosing checking fluid, a piston therein and means to reciprocate it including links connected tothe door trame and door and operated by the movement ot the door, and an escapernent tubepassing through the piston and means' to rotate i-t and means whereby said rotation puts the tu be in communication alternately with 'one or the other y7. ln a door check, the combination with a closed casing and a checking piston therein -and means operatively connecting the saine lo the door l'or moving it, including an actuating spindle and crank arin i'or operatingr the piston and means for turning the spindle in opposite directions, an escapenient tube ior lhe ,fluid in front ot the piston and means connecting said tube and crank arin for al ternately making coniniunication ot said tube with two independent outlet ports.

bs'. Iii a door check, the combination with :i closed cylinder and a piston. therein and 'fleuris 'or reciprocating the piston by the the combination with a rotary escapeinent tube passing through the piston of .the two iiidcpendent vregulable ports for the escapement ot the fluid from said tube, and means for rotating the tube so asto communicate alternately with said ports.

10. Aln a door check, the combinationwith actuating means and a checking cylinder, of a crank operatively connected to its actuating means and a checking piston connected ,to and moved bythe crank in the'cylinder, an escapei'nent' tube passing throughthe piston, devices connecting lthe-tube andcrank whereby the movement ofthe crank `rocks the escapement tube, and a series ofports registering alternately with an outletof the escapement tube as it is turnedby'the movement ofthe crank. i

l1. The combinationl of a'pivoted link ati tachedio the door frame vand an actuating link pivoted thereto, a casing' attached to the door and a spindle in the casing engaging the latter actuating link, a checking piston in the casing, an escapei'nent tube for fluid in. front otl the piston, a pair of independently regulable outlet ports from the escapenient tube, and means operated by the 'movement of said rotating spindle to reciprocate said piston and to put the escape'inci'it tube into communication alternately with the said ou tlet ports i the door moves in different directions.

l2. ln a door check, the combination with a casing on the door and. a spindle therein, of a series of links attached tov the door frame and to the spindle to revolve it in opposite directions the door opens inwardly or out'- wardly, a piston in the casing moved by said spindle, an cscapeinent tube torfluid in front of the'piston, means operatedbyfsaid,spindle to reciprocate said piston aiidtdturn' the tube iiiv two dillerent positions, and adjustable outlet ports adapted to register with the escapement tube iii its two di'erent positions respectively.

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I3. ln a door cheek, the comliination with a checking device including a cylinder anda piston and devices for operating it by the vices for operating the piston and the tube whereby the tube may be revolved, and means to vary the outlet port of the tube by its rotation and thereby vary the escapement ofthe fluid behind the piston.

14. In a door check, the combination with ne. Sceneo al checking device including a cylinder and Ia piston therein, and a device attache to the door to move the piston, of an escapeinent tube for fluid in iront ofthe piston moved by the piston-moving devices, `and means .for varying the eecapernentoutlet from said tube by Such revolution, and separate means to vary the resistance of escaping Huid after passage out of the tube.

15.111 a double acting door check, the combination With a checking device on the door, a lever arm operatively connected thereto, .and an actuating link connecting such lever arm tothe door fra-Ine, of a sup- `porting bracket on the irame for such link aving a pivot for the link set et an angle to the axis olE the door hinge whereby the link may swin under the door frame While the checking evice moves in e horizontal plane.

16. In a double actin door check, the combination With a che@ ing device on the door provided With a rotary checkinT shaft, of an actuating link therefor pivotenion the side of the door frame so as to swing in a plane at an angle to the horizontal., and another link universally pivoted at one end to the -irst link and at the other end pivoted to the checking shaft for movement in a verti cal direction, ,whereby the checking {loviefe may nieve in a horizontal plane, and the links move angularly under the door l're me.

17. ln double acting Licor check the combination With-a checking device, oi zic-- tuating linke for the checking device n tached outside the door frame, one ci' which is pivotcd to the door frame eo to swingl under these-Ine when the door opens away' fron'ithe point of attachment of the eamo in the 'frame and swilgs over the top oi the (loer when the door opens in the other clirectnni.

In testimony whereof l have lm'eunilei" signed my naine in the presence ci the mvo subscribed Witnesses.

OSAR (l Rllitflll. Witnesses E. T, ANDERSON, PAUL C mnnNrnn, 

